[core] Migrate describeConformance to TypeScript

[flaviendelangle]

Not much to say here, I just migrated this file to TypeScript, right now using JS utils on the X repo is painful.
There should be no behavior change

[mui-bot]

	Messages
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No bundle size changes

Generated by 🚫 dangerJS against 1eb6e22

[mnajdova]

Can we convert at least one test file that uses both test suites to ensure the types are correct?

[flaviendelangle]

@mnajdova how do you mean by "both test suites" ?

We have several test files using describeConformance
Do you want one using both describeConformanceUnstyled and describeConformance ?

[mnajdova]

We have several test files using describeConformance

I meant to convert one of these test files to be TypeScript file instead of JavaScript (maybe Button.test.js -> Button.test.tsx). For the unstyled components we should be covered, as the tests are already written in TypeScript.

[flaviendelangle]

@mnajdova but we already have some of them in TS (23 in fact)
For instance Autocomplete, Stepper or Divider calls to describeConformance are done in TS files

I can migrate other to TS of course but I don't think it will catch anything new.

[mnajdova]

Ah, I have missed these, alright, thansk for pointing out.

[mnajdova]

LGTM